Across
1
Imaginary line around the middle of Earth
4
One of seven major landmasses
5
Largest river in South America
11
Large natural elevation of earth
Down
2
Seasonal heavy rainfall
3
Ridge of rock or coral near the surface
6
Raised area of land, smaller than a mountain
7
Cold treeless Arctic plain
8
Tool for finding directions
9
Low area between mountains
10
Region near the equator